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Solid glass microspheres are hemispherically coated with paramagnetic black
coating, which makes the glass spheres appear black. Three
options of glass core are available for customers who require a
fluorescent tracer of a specific density. Variety of colors and sizes can be produced as a custom order.
Also see Black Paramagnetic Polyethylene Microspheres.
Borosilicate Glass Core - Density ~2.2g/cc
Soda Lime Glass Core - Density ~2.5g/cc
Barium Titanate Glass Core - Density ~4.5g/cc
Microspheres are packaged in a vial, quantity of spheres varies by size. Dry powder.
Produced under Pat. 8,501,272
Material Safety Data Sheet - Hemispherically Coated Solid Glass Microspheres
Black Cellulose Acetate Polymer Spheres - Large Plastic Beads ~1.3g/cc - 1.5mm to 3.5mm
Janus Particles - Hemispherically Coated Microspheres - Half-Shell Color Coating on Polymer Spheres
Black Paramagnetic Polyethylene Microspheres 1.2g/cc - 10um to 1400um (1.4mm)